1 /*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <input/Input.h>
18
19 #include <android_runtime/AndroidRuntime.h>
20 #include <jni.h>
21 #include <nativehelper/JNIHelp.h>
22
23 #include <nativehelper/ScopedLocalRef.h>
24
25 #include "android_view_InputDevice.h"
26 #include "android_view_KeyCharacterMap.h"
27
28 #include "core_jni_helpers.h"
29
30 namespace android {
31
32 static struct {
33 jclass clazz;
34
35 jmethodID ctor;
36 jmethodID addMotionRange;
37 } gInputDeviceClassInfo;
38
android_view_InputDevice_create(JNIEnv * env,const InputDeviceInfo & deviceInfo)39 jobject android_view_InputDevice_create(JNIEnv* env, const InputDeviceInfo& deviceInfo) {
40 ScopedLocalRef<jstring> nameObj(env, env->NewStringUTF(deviceInfo.getDisplayName().c_str()));
41 if (!nameObj.get()) {
42 return NULL;
43 }
44
45 // b/274058082: Pass a copy of the key character map to avoid concurrent
46 // access
47 std::shared_ptr<KeyCharacterMap> map = deviceInfo.getKeyCharacterMap();
48 if (map != nullptr) {
49 map = std::make_shared<KeyCharacterMap>(*map);
50 }
51
52 ScopedLocalRef<jstring> descriptorObj(env,
53 env->NewStringUTF(deviceInfo.getIdentifier().descriptor.c_str()));
54 if (!descriptorObj.get()) {
55 return NULL;
56 }
57
58 std::optional<KeyboardLayoutInfo> layoutInfo = deviceInfo.getKeyboardLayoutInfo();
59 ScopedLocalRef<jstring> keyboardLanguageTagObj(env,
60 env->NewStringUTF(
61 layoutInfo
62 ? layoutInfo->languageTag.c_str()
63 : NULL));
64 ScopedLocalRef<jstring> keyboardLayoutTypeObj(env,
65 env->NewStringUTF(
66 layoutInfo
67 ? layoutInfo->layoutType.c_str()
68 : NULL));
69
70 ScopedLocalRef<jobject> kcmObj(env,
71 android_view_KeyCharacterMap_create(env, deviceInfo.getId(),
72 map));
73 if (!kcmObj.get()) {
74 return NULL;
75 }
76
77 const InputDeviceIdentifier& ident = deviceInfo.getIdentifier();
78 const auto usiVersion = deviceInfo.getUsiVersion().value_or(InputDeviceUsiVersion{-1, -1});
79
80 ScopedLocalRef<jobject>
81 inputDeviceObj(env,
82 env->NewObject(gInputDeviceClassInfo.clazz, gInputDeviceClassInfo.ctor,
83 deviceInfo.getId(), deviceInfo.getGeneration(),
84 deviceInfo.getControllerNumber(), nameObj.get(),
85 static_cast<int32_t>(ident.vendor),
86 static_cast<int32_t>(ident.product), descriptorObj.get(),
87 deviceInfo.isExternal(), deviceInfo.getSources(),
88 deviceInfo.getKeyboardType(), kcmObj.get(),
89 keyboardLanguageTagObj.get(), keyboardLayoutTypeObj.get(),
90 deviceInfo.hasVibrator(), deviceInfo.hasMic(),
91 deviceInfo.hasButtonUnderPad(), deviceInfo.hasSensor(),
92 deviceInfo.hasBattery(), usiVersion.majorVersion,
93 usiVersion.minorVersion,
94 deviceInfo.getAssociatedDisplayId()));
95 // Note: We do not populate the Bluetooth address into the InputDevice object to avoid leaking
96 // it to apps that do not have the Bluetooth permission.
97
98 const std::vector<InputDeviceInfo::MotionRange>& ranges = deviceInfo.getMotionRanges();
99 for (const InputDeviceInfo::MotionRange& range: ranges) {
100 env->CallVoidMethod(inputDeviceObj.get(), gInputDeviceClassInfo.addMotionRange, range.axis,
101 range.source, range.min, range.max, range.flat, range.fuzz, range.resolution);
102 if (env->ExceptionCheck()) {
103 return NULL;
104 }
105 }
106
107 return env->NewLocalRef(inputDeviceObj.get());
108 }
109
register_android_view_InputDevice(JNIEnv * env)110 int register_android_view_InputDevice(JNIEnv* env)
111 {
112 gInputDeviceClassInfo.clazz = FindClassOrDie(env, "android/view/InputDevice");
113 gInputDeviceClassInfo.clazz = MakeGlobalRefOrDie(env, gInputDeviceClassInfo.clazz);
114
115 gInputDeviceClassInfo.ctor = GetMethodIDOrDie(env, gInputDeviceClassInfo.clazz, "<init>",
116 "(IIILjava/lang/String;IILjava/lang/"
117 "String;ZIILandroid/view/KeyCharacterMap;Ljava/"
118 "lang/String;Ljava/lang/String;ZZZZZIII)V");
119
120 gInputDeviceClassInfo.addMotionRange =
121 GetMethodIDOrDie(env, gInputDeviceClassInfo.clazz, "addMotionRange", "(IIFFFFF)V");
122 return 0;
123 }
124
125 }; // namespace android
126